Rocket Lab announced Saturday it will hold off launching an Electron rocket on an orbital test flight until early 2018 as officials face the end of a 10-day pre-approved launch window, after a series of scrubs to ensure the booster is ready for liftoff and wait for ideal weather conditions.

An Orbital ATK Pegasus XL rocket carrying eight hurricane research satellites for NASA fired into orbit Thursday at 8:37 a.m. EST (1337 GMT) off the east coast of Florida.

These photos chronicle the activities of Russian cosmonaut Fyodor Yurchikhin and NASA astronaut Jack Fischer on Thursday as they prepared for liftoff on a Soyuz rocket to begin an expedition of more than four months on the International Space Station.